Machine for placing wedges in armature slots



LE ROY F. WILLIS m FOR PLACING WEDGES in ARMYATURE s o'rs March 18 1924.

Filed July 22 .1921 2 Sheets-Sheet 1 rlll llll l1 ATTORNEYS March 18 1924.

LE ROY F. WILLIS MACHINE FOR PLACING WEDGES IN ARMATURE SLOTS Filed July 22. 1921 2 shetsshget' 2 A TTORN YS Patented Mar. 18, 1924.

UNITED STATES LE ROY FLOREN WILLIS, OF ST. LOUIS, MISSOURI.

MACHINE I B'OR PLACING WEDGE-S IN All-MATURE SLOTS.

Application filed July 22, 1921. Serial No. 486,842.

To all whom it may concern:

Be it known that 1, LE RoY F. WILLIS, a citizen of the United States, and a resident of St. Louis, in the State of Missouri, have invented a new and useful Improvement in Machines for Placing Wedges in Armature Slots, of which the following is a full, clear, and exact description.

My invention relates to improvements in machines for placing wedges in armature slots, and it consists in the combinations, constructions and arrangements herein described and claimed.

An object of my invention is to provide a device having means for pressing a coil into an armature slot, for shearing both the insulation of the slot and the fibrous material employed in forming a so-called wedge for closing the slot and for pressing the wedge into the slot at the same operation.

A further object of my invention is to provide a device of the character described that has means for shearing from a strip of fibrous material having a width greater than that of an armature slot, a strip or wedge of the proper width for closing the slot and for pressing the strip into the slot at the same operation.

A further object of my invention is to provide a device of the character described in which the means for accomplishing the pressing of a strip of fiber or the like into an armature slot is adjustable whereby the device is adapted for use in pressin the strips into slots of armatures of di erent sizes and having slots directed in various manners.

A further object of my invention is to provide a device of the character described that is relatively simple in construction and operation, not likely to get out of order easily, and thoroughly practical commercially.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings, forming part of this application, in which- Fig. 1 is a side elevation showing the device in position for accomplishing the pressing of a strip or wedge into an armature slot,

Fig. 2 is a section along the line-2-2 of Fig. 1,

Fig. 3 is a plan view of a fragmentary portion of the device, and

Fig. 4 is an enlarged section throu h an armature, showing a portion of the evice in adjusted position with respect to the armature.

Referringnow to the drawings, 1 denotes a supporting base or table. Secured to the base or table 1 are spaced apart vertically extending parallel pedestals 2 and 3, each of which is provided with a base 4 attached to the base or table 1 by means of bolts 5 or like fastening means. The pedestals 2 and 3 are respectively provided with lateral extensions or bosses 6 and 7, and these bosses which are horizontallv alined are arranged to face each other. A center 8 has a threaded shank 9 arranged to enter a horizontal bore 10 through the embossed portion of the pedestal 2. The bore 10 is threaded for engagement with the shank 9 and is enlarged at 11, as shown. A bore 12 through the embossed portion of the pedestal 3 is axially alined with the bore 10 and is reduced at 13 to receive the reduced portion 14 of the shank of a center 15 that is slidably disposed in the bore 12. A spring 16 mounted on the reduced portion 14 that is disposed in the bore 12 re-acts against the shoulders provided by the reduction of the shank of the center and of the bore 12 and thereby tends to move the center 15 toward the center 8. A disk 17 secured to the reduced portion 14 at its end abuts the pedestal 3 and limits the movement of the center 15 toward the center 8. An operating handle 18 is arranged with. a portion thereof projected into a slot 19 in the wall of the pedestal 3 and maintained therein by means of a pivot pin 20. An extension 21' is adapted to engage the inner wall of the disk 17, whereby the center 15 may be moved along the bore 12 against the action of the spring 16. An armature 21 is supported between the pedestals 2 and 3 when the centers 8 and 15 are relatively adjusted to engage the shaft 22 of the armature at its ends.

The pedestals 2 and 3 are enlarged adjacent to their upper ends and are provided with horizontally alined bores or openings 23 and 24, respectively. A beam 25 is projected through the alined openings 23 and 24 and is slidable in the direction of its length. The bar 25 is formed with a plurality of spaced apart openings 26 therethe plate 54 constitutes a guide, which is positioned in al'inement with the wheel 53. The mature 21 is first adjusted between the cc Wrs and 35 in. the manner de- The threaded adjusting members are then manipulated so that a il plane tz-mgent with the lower 2 the wheel 53 will also be tangent to ipper part of the periphery of the The frame {L is then adiect to the block 41 so that a per ion 39 of the foot 57 is ark in position to enter a slot of the armature The trams is then secured in adjuste position by means of the nut l8. The iip 79, which has a width greater than the width of the armature slot, is then arranged with one 'end thereof disposed in the recess 78 and with the portion thereof adjacent its other end disposed in the guide groove 58 of the foot 57. The crank handle 32 is then manipulated to occasion a movement of the beam toward. the pe: ctal 3. The wheel will contact the edges of the armature slot and will cooperate with such edges in shearing; from the strip having a width equal to that of the armature slot. The presser portions 59 of the foot 57. which. is in advance of the wheel 53, will press the wires 81 into the 1 4.9. The wheel 53 will then shear the insula ion 80 and the fiber 79. The guide 3 7 deflects the strips sheared from the wedge that to be pressed into the slot. As the bar is moved toward the pedestal 8, an arm 82 hat is integral with the plate 5% or may be made separately and secured thereto moved. in advance of the foot 57 and is in constant engagement with the roller 78. The arm 82 is formed with the cur; l or com surface 83 and as the bar 25 is moved toward the pedestal, the engagement ot the cam surface 88 with the roller 7-13 occasions a slidable movement of the member along the bore 68 against the action ct the spring 72. The strip 79 supported at one end by the member 69 and is guarded a ts other end between the rim oi. the wheel and the periphery of In consequence, a. strip scribed this,

the a l-nature 2i. havii a length equal to that of the arma-, urc av be supported to register with the slot length and the member 69 will then t a moven'ient of the strip in the our, m of its length when it is first cue" "e l l the wheel at one end of the slot. The n emb 69 is moved laterally out of the path of the wheel and out of engagement with the strip 79 as soon as the latter is engagel by the wheel at one end of the slot: The stop 27 is adjusted to limit the movement of the bar 25 so that the wheel will'not be moved out of engagement with the slot of the armature 21 but only to the end of the latter. The crank 32- is then. rotated in the reverse direction to cocasion a return movement of the wheel 53 along the slot 49. It is to be further noted that the shearing and pressing wheel 53 has another function The armature 21 is of course made of a soft metal, and when the shearing wheel 53 engages the edges of the slot 47-9, such. edges are upset or swaged inwardly and downwardly to secure the fiber strip in place. .Vhen the wedge has been pr sed into one of the slots of the armature, the latter is rotated until another slot is in a desired position with rcspectto the nresser portion 9 of the foot 57. The device provides a relatively simple, easily operated means for accomplishing at one operation work which has heretofore required a number of separate and distinct operations.

I claim:

1. A device of the character described comprising a reciprocable member and means carried thereby for engaging an armature to shear a strip of a desired width from a wider piece of material placed between d means and the armature.

2. A device of the character described comprising; reciprocable member and means carried thereby for engaging an armature to shear a strip of a desired width from a Fider piece of material placed between. said means and the armature and for pressing the strip into a slot of the arm ature.

3. A. device of the character described comprising a horizontally reciprocable member, means for engaging an armature to support the latter with its axis parallel with the reeiprccable member, and means carried by the reciprocable member for engaging the armature at its periphery to shear a strip of a desired width from a sheet placed between said i'neans and the periphery of the armature and to press the strip into a slot of the armature.

4. A device of the character described comprising a horizontally reeiprocable member, means for engaging an armature to support the latter with its axis parallel with the reciprocahle member, and adjustable means carried by the reci rocable member for engaging the armature at its periphery to shear a strip of a desired width from a she 1 placed between said means and the periphery of the armature and to press the strip into a slot ot the armature.

5. A device ol the character described comprising a horizontally reciprocablc member, means for engaging an armature to support the latter with its axis parallel with the reciprocable member, adjustable means carried by the reciprocable member for engaging the armature at its periphery to shear a strip of a desired width from a the reciprocation horizontally, a plate carried the l" frame and tuned to provide a I -eans TSCI toot positioned in advance of the liiember. wheel said presser toot being provided with ter deseri ed. slot in its upper side adapted to receive an end portion of a strip of liher and to (:5 guide the latter between the rim oi the wheel and the =-riphe v ii" the rrr'iiiature re the eel is moved tom-hardly s il, presse port '11 be ng formed with an integral J I 5 per on oi less width than the "filth the wheel. and anxilia"' means of the character rlcseri ied,

dire; preginig and shearing wheel tnre. by the frame for rotation a imit '7 laxis said wheel having a width equal to the width 0? an armature means supporting the frame for ad- 'nent rertieally and rotatively and for lplOCtl'lOL horizontally a plate carried said frame and formed to provide a seer toot )OSltlODGCl in advance of the el, said pre r foot being provided r-rith ot in its upper side adapted to receive end portion of a strip of fiber and to I e the latter between the rim of the .1 its upper s? wheel and the periphery of the armature as a 5 1i e A T lllbll of a st it the w eel more-d forwardly, said presser c i a1 to iide portion being formed with an integral dsl t "h pending portion of less width than the width of: th wheel, an auxiliary member for sup porting the strip of fiber at its other end initially, means for moral l r supporting the auxiliary men her in a desired position with respect to the periphery of the armature, and :1- earn member carried by the plate and engaging the auxiliary member to more 'he latter laterally as soon as the wheel is moved forwardly whereby the strip rlisen- 190 gages the anxiliai member and the latter is moved out of the path of movement of the wheel.

wheel, said pres r i i '7 11. A device of the type described a slot in its upper l receive comprising a frame adapted to rotatin end Q 1 and to ably support 211 armature, and a strip r i of the carrying rieans reciproeably supported by arn'iatn re said frame and having a portion thereof Y M U- acapted to enter and be guided by the slot in the armature, said means also being adapted to engage with the armature to shear a strip of a desired width from a wider strip of material carried by said means the strip being disposed between said llPflllS and the armature, and for pressing the strip into a slot of the armature.

LE ROY FLOREN WILLIS. 

